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3 years ago

HOW TO ROUND TO TWO DECIMAL PLACES ON THIS QUESTION?

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

7 0

Answer:

o.04

Step-by-step explanation:

3.141599/77= 0.04079987 to round to the second decimal point just go to the 3rd one, if the number is 5 or up the number goes one up, if its 4 down the number stays the same.

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3 years ago

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Could someone please help me with the question please

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Answer:

parallel

Step-by-step explanation:

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3 years ago

A die is rolled 360 times. Let say that you want to use normal approximation to find the probability that the number of 4 was ro

Neporo4naja [7]

Answer:

0.0000

Step-by-step explanation:

Given that a die is rolled 360 times. Let say that you want to use normal approximation to find the probability that the number of 4 was rolled exactly 100 times.

Here we know that getting 4 is binomial with p = 1/6 and n =360

By approximating to normal after checking conditions are satisfied we have

X = no of fours obtained is normal

with mean = $np =60$

and variance = $npq = 50$

Std dev = 7.072

X is N(60, 7.072)

For finding out prob x=100 we have to do continuity correction as

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4 years ago

An open box is to be constructed so that the length of the base is 3 times larger than the width of the base. If the cost to con

natta225 [31]

Answer:

Step-by-step explanation:

Let assume that the volume = 88 cubic feet

Then:

$L = 3w --- (1)volume = l \times w \times h \\ \\ 88 = (3w) \times w \times h \\ \\ 3w^2 h= 88 \\ \\ h = \dfrac{88}{3w^2}--- (2) \\ \\$

The construction cost now is:

$C = 4(l \times w) + 2 ( w \times h) + 2(l \times h) \\ \\ C = 4(3w^2) + 2(w \times \dfrac{88}{3w^2}) + 2(3w \times \dfrac{88}{3w^2}) \\\\ C = 12w^2 + \dfrac{176}{3w} + \dfrac{176}{w}$

Now, to determine the minimum cost:

$\dfrac{dC}{dw}= 0 \\ \\ \implies 24 w - \dfrac{176}{3w^2}- \dfrac{176}{w^2}=0 \\ \\ 24 w ^3 = \dfrac{176}{w^2}(\dfrac{1}{3}+1) \\ \\ 24 w ^3 = \dfrac{176(4)}{3} \\ \\ w^3 = \dfrac{88}{3(3)}$

$w = \dfrac{88}{3(3)}^{1/3} \ feet$

Now;

$length = 3 ( \dfrac{88}{3(3)})^{1/3} \ feet$

$height = ( 88})^{1/3} (3)^{1/3} \ feet$

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3 years ago